In an appearance before a top congressional economic committee today, Federal Reserve Chairwoman Janet Yellen defended the Dodd-Frank Act and pledged to serve out her term despite criticism from Donald Trump during his presidential campaign.

our lighting. Cecilia, thanks very much. Republican, their big debate tonight ahead of next Tuesday's decisive votes. Florida, the biggest prize, winner take all and latest poll shows trump with a massive lead over Marco Rubio and Tom llamas is on the scene. Reporter: Good morning. Senator Rubio